Leveling machine



Nov. 9, 1937. E. E. WINKLEY LEVELING MACHINE Filed July 7, 1936 3Sheets-Sheet l Nov. 9, 1937. w K 2,098,366

LEVELING MACHINE Filed July 7, 1936 3 Sheets-Sheet 2 Nov. 9, 19 37. w N2,098,366 I LEVELING MACHIN-E Filed July 7, 1936 3 Sheets-Sheet 3Patented Nov. 9, 1937 UNITED STATES PATENT OFFICE LEVELING MACHINEApplication July 7, 1936, Serial No. 89,365

9 Claims.

This invention relates to machines for applying pressure to the bottomsof shoes, and is herein illustrated as embodied in a leveling machine ofthe typedisclosed in Letters Patent of the United v States No.1,667,761, granted on May 1, 1928, upon an application of E. E. Winkleyand H. A. Davenport, and in various Letters Patent therein re-.

ferred to, although itis to be understood that in its more generalaspects the invention is not thus 10 limited in its applicability.

Machines of the above mentioned type comprise are also provided withautomatic means for pressing the roll upon the shoe and for relievingthe pressure at predetermined times in the cycle of operations of themachine to avoid excessive pressure at the ball of the shoe and forimparting to the leveling roll tipping movements of different extentslaterally of the shoe to cause the pressure of the roll to be applied tothe shoe at different inclinations when the roll is operating along theforepart and shank portions respectively so that these differentportions will be properly leveled.

The present invention provides an improved construction such that inoperating upon shoes of different styles, that is, shoes that differ inrespect to the relative lengths of their forepart and shank portions,the relative positions of the shoe support and leveling roll are moreprecisely determined than heretofore each time in the movement of theshoe support when the pressure of the roll is relieved. Such accuratecontrol of the relative positions of the shoe support and leveling rollrenders the machine particularly well adapted for use p in operating onshoes characterized by a pronounced line or ridge extending across thesoleat the ball of the shoe. The construction herein shown is such thatfor the, purpose in view the rate of movement of the shoe support may beadjustably varied when the roll is traversing both shoe in apredetermined cycle. Such machines obviates any danger that there may beof the pressure of the roll obliterating such a line or ridge on thesole. 'Moreover, since the roll is tipped at one inclination to the shoebottom when operating along the forepart and at one or more differentinclinations to the shoe bottom when operating along the shank, theinclination of the roll being changed at the time of pressure relief,assurance also is afforded that the pressure of the roll will beproperly applied to all portions of the forepart and shank. It will beevident that the rate of movement of the shoe support may be thus variedwithout varying the entire extent of swinging movement imparted to theshoe support to cause the leveling roll to traverse both the forepartand shank which may be controlled as heretofore in accordance with thesize adjustment of the jack.

The above and other features of the invention including various noveldetails of construction and combinations of parts will now be moreparticularly described by reference to the accompanying drawings andpointed out in the claims.

In the drawings, 7

Fig. 1 is a view in side elevation of a machine of the type disclosed inthe prior Letters Patent hereinbefore mentioned, with the presentinvention embodied therein;

Fig. 2 is a view in rear elevation of the machine shown in Fig. 1;

Fig. 3 is'a section on the line III--III of Fig. 1;

Fig. 4 is a detail view of the cams for operating the mechanism forvarying the rate of movement of the shoe support;

Fig. 5 is a plan view of the bottom of a shoe and illustratingdiagrammatically the number and extent of relative swinging movements ofthe shoe support and leveling roll in operating on the bottom of theshoe; and

Fig. 6 is a diagram illustrating the relative timing of the cams whichoperate different parts of the machine.

Since the invention is illustrated as applied to a leveling machine of awell-known type only such parts of the machine as it is necessary torefor to for an understanding of the invention are shown and will bedescribed in detail. It will be understood that the machine includes inits or-. ganization two sets of operating instrumentalities foroperating on diiferent shoes in different locations in the machine andthat each set comprises an automatically controlled leveling roll l0 anda shoe support or jack which, in the power operation of the machine, ismoved automatically in directions lengthwise of the shoe to cause theroll to operate progressively along the bottom of the shoe. Each jack(Fig. 1) comprises a toe post l2 and a heel post it which are pivotedtogether at l6 for relative adjustment for shoes of different sizes bymeans of a threaded adjusting rod [8 which moves the heel post toward orfrom the toe post so that the toe ends of shoes of different sizes willbe presented substantially in the same relation to the roll Hi. The jackas a whole is operatively movable about the axis of a shaft 26,.on whichthe toe post is mounted, to carry the shoe forwardly and rearwardlyunder the leveling roll. In these respects the construction shown issimilar to that disclosed in Letters Patent of the United States No.1,239,664, granted on September 7 at 25 (Fig. l) on the frame of themachine for I swinging movements in a vertical plane to press the'rollis upon the shoe andto relieve the pressure at different respectivetimesin the operation of the machine. 1T0 cause the roll to operatealong the bottom of the shoe the jack is swung about the axis of theshaft 20 by power-operated mechanism comprising a path cam-26 formed inone face of a cam wheel 28 ona cam shaft 36 and connections from the cam26 to the jack which will presently be described. Generally speaking,the cycle ofoperations cornp'rise's first a movement of the jack tocause the roll to traverse the shoe from the toe end to the heel seat,then a plurality of backward and forward movements 35.while the roll isoperating in the shank, thereafter a movement to cause the roll toreturn to the toe end along one side and then to traverse the shoe fromthe toe to the heel seat along the opposite side followed by apluralityof backward and forward movements to cause the roll to operate in theshank at that side and, finally,a movement to cause the rollto return tothe toe and to leave the shoe. As the roll is thus operating upon theopposite sides of the forepart and shank portions of the shoe, tippingmovements of different extents are imparted to the roll to cause thepressure of the roll to be applied to the forepart and shank portionsrespectively at different inclinations properly to level them. 7

The shafts 23 are rocked in the roll carriers 24 to impart to theleveling rolls their tipping movements by mechanism which issubstantially the same as that disclosed in Letters Patent No. 889,287,granted June 2, 1998, upon an application of mine. Fast to the rear endsof the shafts 23 substantially in vertical alinement with the axis 25 ofthe roll carriers are segments 32 (Fig. 2) engaging rack bars 34 whichare connected together by a pinion (not shown) for equal movements inopposite directions. Connected to one of the rack bars St is a link 86pivotally connected to a block 38 slidably mounted in a-curved slot 40formed in a crank arm 42 fast to a shaft 44 to which there is securedan'arm 33 connected by a link 38 to a lever stung. 2) pivotally mountedon the frame of the machine and carrying a cam roll 52 engaging a pathcam 5 formed in the opposite side face of the cam wheel 28. The shape ofthe'cam 5 3 is such that tipping movements of different extents areimparted to the leveling roll'in operating upon the forepart and shankportions respectively of the shoe bottom. For varying the extent oftipping movement imparted to the leveling roll as the different portionsof the shoe bottom are acted upon successively by the roll there isprovided. as more fully shown and described in the above-mentionedLetters Patent No. 889,287, four wing cams 56 (Fig. 2) which arecontrolled from the front of the machine by suitable adjusting mechanismand are operated by a set of fly cams (not shown) on the cam shaft 38.The wing cams 56 engage a roll 58 supported by the downwardly extendingarms 60 of a bell-crank lever. having a substantially horizontal arm 52connected by a universal joint to the right-hand end of the link 36, theconstruction being such that by adjusting the positions of the wing camsthe position of the block 38 in the curved slot 40 of the crank arm 42may be varied to vary the effective length of the arm 42 and thus tovary the amount of tipping move-ment imparted to the roll ID as the rolltraverses the forepart and shank portions respectively of the shoebottom.

In the course of the cycle of operations the pressure of the roll on theshoe is controlled through a spring '64 (Fig. 1) by means including acam wheel 66 fast on the cam shaft 30.

lever 68 which is pivoted at 10 on the-frame of the machine and isconnected bya link "to the roll carrier 24. Forcontrolling the springthereis provided a lever arm 14 fast on a rockshaft,

16 which has also fast thereon an arm 18 connected by a link 86 to alever 82 pivoted-at 84 on the frame of the machine and provided with aroll 86 in engagement with the periphery of the cam wheel 66. The leverarm 14 is arranged to bear on ears 88 formed on opposite sides of asleeve member 98 which is slidingly movable in a holder 92 on theframeof the machine and engages the upper end of the spring 64. The cam wheel65 is so formed as to vary the pressure "of the roll on the shoe in thesame general rela tion to the cycle of relative movements of'itheleveling roll and the jack as heretofore. Thatis to say, the cam wheelis provided with a cam '94 for applying the pressure first at theforepart of the shoe, with a depression 95 corresponding to the firstrelief of pressure at the ball line, a cam 98 for'applying pressurewhile :operating'at one side of the shank,'a depression: I00corresponding to the relief of pressurein returning over the ball line,a cam I02 for applying the pressure in operating forwardly over theforepart at one side and in returning along the forepart at the otherside, a depression I04 corresponding tothe first relief of the pressureat the ball line on that side, a cam N35 for applying the pressure inoperating on the shank at that side, a depression H18 corresponding torelief of the pressure in returning over the ball line, a cam H0forapply ing pressure again at the forepart, and a final. depression I[2 corresponding to relief ofthe pressure as the roll leaves the shoe atthe toe and also at the beginning of the cycle of operations at the toeof the next shoe, It will be understood that the time in the cycle ofthe machine whenthe tipping of the roll-takes place is controlled-by thecam 54 and that the amount of tipping movement imparted to the roll bythe cam 54 maybe varied by adjustment of the wing cams 56. Accordingly,each'time in the cycle when'the pressure of the roll is relieved the'crank-arm' 42 is swung to impart to the roll itstipping'movement sothat when the pressure of the .IOlliS again fully applied'to the shoe bythe action of the cam wheel 66 that portion of the shoe which is beingoperated upon by the roll will be properly leveled.

For imparting to each jack its swinging move-. ments there is providedpower-operatedmecha-- 2,098,366. nism which is, for the most part,substantially the same as similar mechanism disclosed in Let.- tersPatent of the United States No. 1,011,301,

granted on December 12, 1911, upon an applica-v vided with a forwardlyextending arm :I I8 hav ing an arcuate slot. I20 formed therein. Slidably mounted in the slot I20 is a block I22 which is connected by a linkI24 to a-block I26 slidably mounted in an arcuate slot I28 formed in anarm I30 which is fast to a rockshaft I32 mounted in the frame of themachine. ".Between' its ends the link I24 is pivotally connected to asupporting arm I34 connected to the frameof the machine. It will beunderstood that the link I24 is connected to mechanism for swinging itabout its pivotal connection to the arm I34 in response to the movementof'the heel post I4 toward or from the toe post I2 to vary the effectivelengths of the arms II8, I30 and thus to vary the extent of swingingmovement imparted to the jack in accordance with variationsinthe sizeadjustment of the jack. Fast to the rock-'- shaft I32 is an arm I36which is connected by means of a link I38 to an arm I40 pivotallyconnected at I42 to the machine frame. Pivotally connected to the upperend of the arm I40 is a bell-crank lever I44 having an upwardlyextending arm I46 carrying a roll I48 arranged to engage the cam 26, anda rearwardly extending arm I50 connected by a link I52 to one arm of .alever I54 loosely mounted on a shaft I56 supported by suitable bearingsin the frame of the machine. The lever I54 has a forwardly extending armI58 (Fig. 3) located between bosses I60, I62 on the lower ends-oflinksI64, I66 respectively. The links I64, I66 are pivotally connected attheir upper ends to blocks, one of which is shown at I68 (Fig. 1), eachblock being'slidably mounted in a dovetailed arcuate slot I12. The slotsI12 are formed respectively in arms I16, I18 (Fig. 2) which arepivotally mounted on the frame of the machine for swinging'move-.

ments about a common axis I80. The arms I16, I18 are provided,respectively, with upwardly extending portions I82, I84 carryingcamrolls I86, I88 arranged to engage cam paths I90, I92 formed respectivelyin the opposite side faces of a cam wheel I94, fast to the cam shaft 30(Figs. 2 and 4). Slidably mounted in a transverse recess in the forwardend of the arm I58 of the lever I54 (Fig. 3) is a coupling pin I98 whichmay be moved longitudinally to engage alternately the boss I on thelower end of the link I64 in a recess 200 in the boss and. theboss I62on the lower end of the link I66 in a recess 202 in the boss, the lowerend of each link I64, I66 being connected to the shaft I56 by a link204Ifor movement on an arc concentric with the arc of movementof the pinI98. For moving the pin I98 into engagement either with the boss I60 inthe recess 200 to connect the cam I90 through the arm I16 and link I64to the lever I54 or with thegboss I62 in the recess 202 to connect thecam l92 through the arm I18 and link I66 to the lever I54 there isprovided mechanism which is substantially the same as that shown in'the.above-mentioned Letters ,Patent No. 1,011,301,

this mechanism being controlled by a cam path 206 formed in the camwheel I94 (Fig.2)-

link 208 (Fig. 1) which extends forwardly and is pivotally connected toa block 2I0 at the front of the machine. Extending through each block2I0 is 'athreaded adjusting rod 2I2 which is rotatably mounted in acasing 2I4 supported by the frameof the machine and is held againstlength-- wise movement in the casing by collars 2I6 fast to-the;rod-j2l2., Each rod has its end portion.

formedto. receive a wrench or crank by means Pivotallyconnected to eachlink I64, I66 is a of which the rod may be rotated to impartlengthblocks I68 in the arcuate slots I12 in the arms It will be evi-I16, I18 and thereby to vary the effective lengths ofthese arms.

Itwill be understood that the rearward and forward swinging movementsabove described are imparted to the jack by the cam 26 to cause the rollI0. to traverse the forepart and shank portions of the bottom of theshoe and that the extent of these movements may be varied by varying thesize adjustment of the jack. It will alsobe understood that the time ortimes in the cycle when the pressure relief occurs are determinedprecisely by the shape of the cam wheel 66. Thenumber of relativemovements of the jack and leveling roll in directions lengthwise of theshoe are indicated diagrammatically in Fig.

5 by a line 2 I8. This line indicates by its lateral separations thedirection of tipping movement imparted to the roll in operating alongthe forepart and shank portions of the shoe first at one side and thenat the other side of the shoe bottom.:--j The machine as thus fardescribed is sub- 7 stantially as shown in the previously mentioned;

prior Letters Patent. 7 j

For purposes of this invention the cams I90, I92 are so shaped as toimpart to the bell-crank lever I44 through the arms I16, I18, adjustablelinks I64, I66, lever'I54 and link I52 swinging movements in timerelation to the swinging of the arm I40 by the cam 26 the extent ofwhich may be varied by adjustment of the links I64, I66 to vary therateof relative movement of the jack and roll I0 and thereby to controltheir relative positions at each time inthe cycle when the pressure ofthe roll is relieved. By thus shaping, the cams I90, I92 the relativepositions of the shoe and roll when the pressure is relieved may beprecisely determined in operating on shoes of different styles in eachswinging move ment of the jack instead of as heretofore only,

after the jack has completed its rearward swinging movement in'each halfof the cycle of operations of the machine. In operating upon shoes,forexample,v having a pronounced line or ridge across the sole at theball of the shoe, such control of the shoe obviates any danger thatthere may.

otherwise be of the'pressure of the roll obliterating this line orridge. Moreover, since the roll.

is tipped relatively to the shoe for operating either in the shank oralong the forepart depending upon the direction of swinging movement ofthe shoe support relatively to the roll, not only willall portions ofthe forep'art'and'shankbe properly leveled butthere will be a tendencyfor the leveling roll to accentuate such a line orridge on the sole atthe ball of the shoe. It will be understood that during the first .halfof the cycle thecoupl'ing pin I98 (Fig. 3) is in engagementwith the linkI64 which is adjustably connected to' the arm I16 controlled by the camI90, and that during the last half of the cycle the coupling pin is inengagement with'the link I66 adjustably connected to the arm I18 whichis controlled by the cam I92, thus permitting thelinks "I64, I66 to beadjusted independently of each other-to vary the rate of movement of theshoe support to take care of variations in thelength of the forepart andshank portions-at the opposite sides of the shoe bottom. The shape ofthecam I90 (Fig. 4) is such that as the arm I40 is'swung by the cam 26 in acounterclockwise direction (Fig. 1) to impart to the jack its rearwardswinging movement to cause the roll I to traverse the bottom of the shoefrom' the toe endto the heel breast line, the bell-crank lever I44 isordinarily swungrelatively to the arm I40 first in a counterclockwisedirection and then to the same extent in a clockwise direction. Theshape of the cam'26 is such "as'to accommodate shoesof a style havingthe longest forepart and shortest shank portion on which the machine isintended to operate. Accordingly, in operating upon shoes of otherstyles such counterclockwise swinging movement of the bell-crank lever I44 relatively to thearm I 40, the'amount of which is determined byadjustment of the links I64, I66, causes the jack to be swung rearwardlyat a lower rate of speed than if the bell-crank lever I44 had been heldin fixed relation to thearm I40. Such counterclockwise swinging movementis imparted to the bell-crank lever I44 until 'the time when the roll 86engages the cam 66 in the depression 96 to relieve the pressure of theleveling roll I0 on the bottom of the shoe. At this time the roll I88 isat the point a in the cam path 'I'90 (Fig. 4) Thereafter as the jackcontinues to swing rearwardly the bell-crank lever I44 is swungrelatively to the arm I40 in a clockwisedirection to cause the jack tobe swungat a greater rate of speed, the shape of'the cam' I90 being suchthat the bell-crank lever I44 is returned to its initial positionsubstantiallyatthe time when the roll I0 reaches the heel breast line.As the jack is then swung forwardly and rearwardly to causethe-rollI0'to operate'in the shank portion of the shoe the' bell-crank lever I44is swung relatively to thearm I40 first in a counterclockwise directionand thenin a clockwise direction in time relation to the swinging:movements of the arm I40, thus'increa'sing the rate of speed of thejack, after which, 'as the jack is swung forwardly by the arm I40 toreturn the roll to the toe end of the shoe, the bell-crank lever I44isr'swung in a counterclockwise direction to increase the. rate of speed.of the jack until the time of the relief of pressure 'ofzthe levelingroll I0 by the engageme'ntof the roll 86 with thecam 66 in thedepression I00. Atfthis time the roll I88 is at the point b .in the campath I90 (Fig; 4). Thereafter the bell-crank lever I44 is swung in aclockwise direction :rela tively to. the arm I40 .in its initialposition substantially-"at thetime when the roll I0.treaches the toeend, thus causing the jack tolbe swung at :a lower .rate of speedas therollltravers'es theshoe bottom "from the ball .line forwardly 'to' Ithetoe end.. .Is' will be understood thatswingingirnovements in timerelation to the swinging of thearm I40 similar to those above-describedare imparted-to the bell-crank lever I44 by the cam lfizlas'the levelingroll I0.is operating along the :opposite :sidecof. the forepart iandshank portions iOf' the shoe bottom in the last half of the cyclezofoperations of the machine. It will also be understoodthatbyiadjustingthe positions of the links .=I6'4, I66tovary the efiective lengthsofthe-arms I16, I18, swinging movements of greater OlflBSSifiXtEI'lt maybe 'impa'rtedzto the bell-crank lever I44. to varythe rate ofrelative.movement of the jackand leveling .roll in operatingupon shoes ofdifferent styles. From the above descriptionit will be evident thatsince the directionof swinging movement imparted to the bell-crank lever144 is changed each time in the cycle when the pressure of the levelingroll I0 is relieved in traversing'the ball line, by varying the extentof swinging movement imparted to the bell-crank lever =I44 to vary therate of relative movement of the jack and leveling roll when the roll istraversing both the forepart and shank portions, thei-time'when thepressure relief of the leveling roll takes place may divide the entirelength of swinging movement of the jack into two movements of. anydesired .ratio. In operating upon shoes ofdifierent styles, that is,shoes that difier in respect to the relative lengths of their forepartand shank portions, the relative positions of the :jack and levelingroll may be thus controlled to position each shoe with its ball lineunder the roll I0 at each time when the pressure of the roll isrelievedaIt will be evident that since 'the bell-crank lever I44 is returned toits initial .positiontat the end of each rearward and each forwardswinging movement of the jack to causethe roll to traverse the shoebottom from the toe end to the heel breast line-and from the heel"breast-line to-the toe end, the rate of relative movementof the jackand roll maythus be varied to determine adjustably the position 'of thejack relatively to the roll at each timewhen'the pressure of the roll onthe shoe is relieved without varying the entire length of swingingmovement imparted to the jack which may be variedas heretofore toaccommodate shoes of difierent sizes by varying the size adjustment'ofthe jack. The relative timing of the camsior' operating the shoe supportand the leveling roll is illustrated diagrammatically in Fig. 6.

laHaving described the invention, what I claim as new andadesire tosecure byLetters Patent of the United States is:

1. A leveling machine having, in combination, a shoe "support, a'leveling roll, means for effecting relativeimovement of said shoesupport and leveling roll in directions lengthwise of the shoe to :causethe leveling roll to operate along the bottom of the-shoe, means forpressing the roll uponithe shoe and for relieving the pressure atpredetermined times in the cycle of operations of themachine, and meansfor varying the rate ofrela't'ivemovement of the shoe support andlevelingroll in operating'upon both the forepart and shank to controltheir relative positions at each and every :timein the cycle when thepres sure of the roll is relieved'in operating on shoesoftdiiferentlstylles.

1E2. A leve'ling 'machine having, in combination, a fleveling'roll, ashoe support mounted to swing rearwardly and forwardly ibeneathxsaidleveling roll to cause: the roll to operate along the bottom of ashoeion said support, means for pressing.

the roll upon the shoe and for relieving the pres:

sure at predetermined times in each cycle of,

operations of the machine, means for imparting to the shoe support itsrearward and forward swinging movements, and cam means arranged to actthrough said last-named means to control variably the relative positionsof the shoe support and the roll at each and every time in the cycleofthe machine when the pressure of the roll is relieved:

3. A leveling machine having, in combination, a leveling roll, a shoesupport mounted to swing rearwardly and forwardly beneath said levelingroll to cause the roll to operate along the bottom of a shoe on saidsupport, means for pressing the roll upon the shoe and for relieving thepressure at predetermined times in each cycle of operations of themachine, means for imparting to the shoe support its rearward andforward swinging movements, and means for adjustably varying the rate ofmovement of the shoe support when the roll is traversing both theforepart and shank portions of the shoe bottom to cause the relief ofpressure to occur when the roll is located substantially at the junctionof the forepart and shank in operating on shoes of different styles. 7

4. A leveling machine having, in combination, a shoe support, a levelingroll, means for effecting relative movement of said shoe support andleveling roll in directions lengthwise of the shoe to cause the levelingroll to operate along the bottom of the forepart and shank portions ofthe shoe, means for imparting tothe roll tipping movements laterally ofthe shoe at predetermined times in the cycle of operations of themachine, and means for adjustably varying the rate of relative movementof the shoe support and level ing roll when the roll is traversing boththe forepart and shank portions of the shoe bottom to cause the tippingof the roll to occur when the roll is located substantially at thejunction of the forepart and shank in operating upon shoes of differentstyles.

5. A leveling machine having, in combination, a leveling roll, a shoesupport having heel and toe posts relatively adjustable to accommodateshoes of dilferent sizes, means for effecting relative movement of saidshoe support and leveling roll in directions lengthwise of the shoe tocause said leveling roll to operate along the bottom of the shoe, saidlast-named means being constructed to vary the entire extent of saidrelative movement in accordance with variations in the relativepositions of the heel and toe posts, means for pressing the roll uponthe shoe and for relieving the pressure at predetermined times in thecycle of operations of the machine, and means for adjustably varying therate of relative movement'of the shoe support and leveling roll inoperating upon both the forepart and shank to control their relativepositions each and every time in the cycle when the pressure of the rollis relieved in operating upon shoes of different styles without varyingthe entire extent of relative movement of the shoe sup-port and levelingroll lengthwise of the shoe.

6. A leveling machine having, in combination, a leveling roll, a shoesupport mounted to swing rearwardly and forwardly beneath said levelingroll to cause the roll to operate along the forepart and shank portionsof the bottom of a shoe on said support, means for pressing the rollupon the shoe and also for relieving the pressure at each time in themovement of the shoe support when the'roll is at the junction oftheforepart and shank portions of the shoe bottom, means for impartingto the shoe support its rearward and forward swinging movements, andmeans for adjustably varying the rate of movement of the shoe supportwhen the roll is traversing'both the forepart and shank portions of theshoe to vary the amount of the relative'movement of the roll and supportprior to each relief of pressure of the roll in accordance withvariations in the lengths of the forepart and shank portions of shoes ofdifferent styles.

7. A leveling machine having, in combination, a leveling roll, a shoesupport mounted to swing rearwardly and forwardly beneath said levelingroll to cause the roll to operate along the bottom of a shoe on saidsupport, means for pressing the roll upon theshoe and also for relievingthe pressure at predetermined times in the cycle of operations of themachine, means acting in time relation to said last-named means forimparting to said roll tipping movements of different extent laterallyof the shoe to cause the roll to operate along the opposite sides of theshoe bottom, means for imparting to the shoe support its rearward andforward swinging movements, and different mechanisms arranged to actalternately through said last-named means to determine the rate ofmovement of the shoe support when the roll is traversing both theforepart and shank portions at the opposite sides of the shoe bottom tocause the rearwardly and forwardly beneath said leveling roll to causethe roll to operate along the bottom of the forepart and shank portionsof a shoe on said support, a cam, connections between said cam and saidshoe support for imparting to said support its swinging movementsincluding a pivoted arm arranged to be swung in one direction by saidcam to impart to said support its rearward swinging movement and to beswungin the opposite direction to impart to said support its forwardswinging movement, means operating in time relation to the swingingmovements of said arm for pressing the leveling roll upon the shoe andalso for relieving the pressure of the roll on the shoe, and mechanismoperating in time relation to said last-named means for im parting tosaid pivoted arm independently of said cam swinging movements ofvariable extent in opposite directions to vary the rate of swingingmovement imparted to said shoe support when the roll is traversing boththe forepart and shank portions of the shoe to control the relativepositions of the shoe support and roll each and every time when thepressure of the roll is relieved in operating upon shoes of differentstyles.

9. A leveling machine having, in combination, a leveling roll, a shoesupport mounted to swing rearwardly and forwardly beneath said levelingroll to cause the roll to operate along the bottom of the forepart andshank portions of a shoe on said support, a cam, connections betweensaid cam and said shoe support for imparting to said ward swingingmovement'and to be swung in the opposite direction to impart. to saidsupport its forward swinging movement, means operating in time relationto the swinging movements of said arm for pressing the leveling rollupon the shoe and for relieving the pressure, of'the roll on the shoe,and mechanism for adjustably varying the rate of swinging movementimparted to said pivoted arm by said cam without varying the extent 10of its swinging movement to vary the rate of ERASTUS E; INKLEr. m

